A.0°
B.30°
C.45°
D.60°
[单选题]A.0°B.30°C.45°D.60°
[单选题]A.B.C.D.
[多选题]A.B. C. D.
[单选题]A.20WB.10WC.5W
[单选题]A.血小板减少性紫癜B.急腹症C.急性白血病D.急性关节炎E.过敏性紫癜
[单选题]A.B.C.D.E.
[单选题]A.3V,4ΩB.6V,3Ω,C.-3V,4ΩD.-6V,3Ω
[单选题]A.B.C.OVD.0.7V